Don't put money on a cashless society: RBA

Demand for cash in many countries is rising despite the increasing use of digital payments technologies, a senior Reserve Bank of Australia official says.

While alternate payment methods such as mobile and digital wallets are gain popularity, any transition to a cashless society is far from certain and likely to be a slow one, RBA assistant governor Lindsay Boulton said on Tuesday.

"Whatever the endpoint - less cash or cashless - the journey is likely to be a steady walk rather than a quick sprint," Mr Boulton told the High Security Printing Asia conference in Melbourne.

Cash remains the payment method of choice, particularly in regions such as the Asia-Pacific.

(WATCH: Where are all the $100 notes?)

Mr Boulton said the amount of cash circulating in China has grown around five per cent annually over a four year period - a time when Chinese consumers have undertaken a dramatic uptake of electronic forms of payment.

Mr Boulton said cash was now being hoarded as a precautionary back up or as a safety net in countries around the world.

"There is, in fact, only one country in the world - Sweden - where the transaction demand for cash is in retreat," he said.

The future of money may actually be a hybrid of cash and technology, Mr Boulton said, with central banks requiring notes to have security features that can be easily seen or scanned with a smartphone for verification.

THE CURRENT STATE OF CURRENCY

* The amount of circulated currency among all International Monetary Fund (IMF) countries is growing at nine per cent a year.

* China uses 30,000 tonnes of banknote polymer - the plastic base used to make notes - each year - accounting for 30 per cent of total global consumption.

* China, India and Indonesia have a combined demand for banknote polymer of 55,000 tonnes a year - 55 per cent of global consumption

*The Australian $5 banknote has an estimated lifespan of around 31/2 years

* The Australian $50 banknote - the largest circulation note by volume -has an estimated average lifespan of around 10 years.